Shin Kokoro no tankyū
Subtitle: kami no ko ningen no honshitsu o saguru
By: Ōkawa Ryūhō cho.
Edition: Shohan
Publisher: Kōfuku no Kagaku Shuppan
Published: 1989
Place of publication: Tōkyō
Language: jpn
Number of pages: 249
Subjects: Kōfuku no Kagaku; Soul
Other titles: Kokoro no tankyū.